The Effectiveness of Low-Level LED Light Therapy for Sleep Problems, Psychological Symptoms, and Heart Rate...

Area of Science:

• Nursing
• Sleep Medicine
• Light Therapy

Background:

• Shift work negatively impacts nurses' sleep, psychological well-being, and overall health.
• Nurses are particularly vulnerable to sleep disturbances and mental health issues due to irregular work schedules.

Purpose of the Study:

• To investigate the efficacy of low-energy light therapy in improving sleep quality and psychological symptoms among shift-working nurses.
• To assess the impact of light therapy on heart rate variability in this population.

Main Methods:

• A 4-week randomized controlled trial involving shift-working nurses with insomnia.
• Participants received either low-level light-emitting diode (LED) therapy (red and near-infrared light) or no intervention.
• Sleep quality, psychological symptoms (depression, anxiety, stress), and heart rate variability were measured.

Main Results:

• The intervention group showed significant reductions in insomnia, depression, anxiety, and stress scores compared to the control group.
• No significant improvements in heart rate variability were observed between the groups.
• Pre-intervention scores were comparable between the experimental and control groups.

Conclusions:

• Low-level LED light therapy is effective in improving sleep quality and alleviating psychological distress in shift-working nurses with insomnia.
• The therapy did not significantly affect heart rate variability, potentially due to intervention duration or continuous shift work.
• Phototherapy presents a viable option for improving the health and well-being of shift-working nurses.